*{margin: 0; padding: 0;}
html,body{width: 100%; height: 100%;}
body{font-size: 14px; line-height: 1.5em; font-family: 微软雅黑,tahoma,arial,verdana,sans-serif;}
#container{width: 100%;}
.clearb{clear: both;}
.clearl{clear: left;}
.clearr{clear: right;}